Coke-oven.



S. A. HOGE.

COKE OVEN.

APPLICATION FILED 001223, 1913.

Patented June 9 2 snzswssnnm 1.

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WITNESSES S. A. HUGE.

COKE OVEN. APPLIOATION FILED 00TH, 1913.

Patented June 9, 1914.

INVENTOR ittl TTED STATES PATENT OFICE.

SMITH A. HOGE, 0F BICES LANDING, PENNSYLVANIA.

COKE-OVEN.

mercial purposes.

The invention consists generally in providing a system of circulating Water pipes, embedded in the walls of the structure, sur rounding the fire chamber, so arranged as to provide for heating of the contained water and collection of the resulting steam, together with means for providing for air circulation, and other features of construction and improvement as shall be more fully hereinafter described.

In one preferred application of the invention, as illustrated, it is shown as embodied with a battery of coke ovens of the tunnel or straight wall type, at present in somewhat common use.

Referring to the drawings illustrating the invention, Figure 1 is a view of such an oven structure in side elevation, equipped with my invention Fig. 2 is a view in front elevation, partly in section on the line II II of Fig. 1, illustrating the arrangement of circulating pipes through the brick-work of the wall. Fig, 3 is a longitudinal sectional view through the lower portion of the oven structure, illustrating the pipe system and the surrounding protect lng brick-work with the inclosed air space. Fig. 4 is a detail view, showing a similar arrangement of piping at one end of the furnace, blrt with the water supply pipe outside of the end wall. Fig. 5 isa detail perspective view of one of the pipe-protecting airspace-providing tiles. Fig. 6 is a detail View showinga modified arrangement of pipe connections for allowing for removal of any one of the through pipes without disturbing the rest of theinstallation. Fig. 7 is a longitudinal sectional view showing heat-controlled-valve actuating mechanism for the air supply.

The oven, or series of ovens, which are ordinarily built together, are provided with the interior cavities 2 within the surrounding Specification of Letters Patent.

Patented June 9, 1914.

Application filed October 23, 1913. Serial No. 796,766.

usually brick walls 3, the ovens being built in series or banks providing a continuous flat upper surface for the passage of the lorry or charging car for discharging the coal into the oven chambers through the tunnel openings 4. The upper portion of the oven cavity is usually arched. as shown, the roof sloping outwardly from the central tunnel opening toward each end door, as indicated in dotted lines in Fig. 1. The Walls as thus made between the adjacent chambers 2 are of considerable thickness and intended for the purpose of absorbing and retaining a very considerable and high degree of heat, due to the combustion of the bituminous matter of the coal in the coke making operation, such heat being retained for a very considerable period of time, and being sufficient to effect. firing of the new charge of green coal long after the coke is removed. For the purpose of utilizing this latent heat, I provide series of circulating pipes 5 which are located as closelv adjacent to each other as convenient, extending longitudinally through the walls. of the oven, surrounding the chamber 2 and conforming generally to the outline of the interior wall surfaces thereof. The terminals of pipes 5 are connected by suitable fittings 6 and nipples 7, constituting header pipe connections, at the lower porti n and at each side of the bank of ovens with a water supply pipe 8', one of such pipes being preferably used at each end portion of the ovens, extending longitudinally along the breasts thereof. These water pipes 8 may be conveniently embedded in the base portions of the front walls, as shown in Fig. 3, or may be located outwardly beyond the ovens, in the open air, as indicated at 8, Fig. 4. Suitable valves 9 for controlling the circulation of the water system are provided between the pipe 8 and the lowermost of the series of pipes 5, drain cocks or valves 10 being also provided for the purpose of draining the system when de sired. At the upper portion of the series of connections 6 and 7, the entire series of pipes 5 are brought into circulating communication with a common steam drum 11 by means of pipe connections 12 and 18, a valve 14 being preferably interposed, for the purpose of cutting out any particular oven system. As shown, the system of circulating pipes for each oven may thus be throwninto or out of the circulation, whereby to utilize the invention for the produc-- v and 7, with the main steam drum at the upper portion of the structure as already described. By this arrangement, any one of the heatino pipes 5 may be readily removed from the installation, by merely disconnecting it at each end, without disturbance of the remaining pipe system. For the purpose of protecting the pipes 5, I surround them with series of hollow tile or brick 16, preferably made in halves so as to embrace the pipe 5 throughout its length, as shown in Fig. 3. The interior opening 17 of these tiles is considerably larger than the cross section of theinclosed pipe, for the purpose of providing ample air circulation. and the resulting space is preferably greatest at the middle portion of the oven structure, as clearly shown in Fig. 3. For such purpose the inner clearance spaces of the tiles is gradually enlarged, as by tapering the walls of the openings, as shown, the exteriors of the tiles being preferably uniform in cross section to facilitate laying the same within the brick-work. At each outer end portion of pipe.5 I have provided longitudinally slidable nipples 18 adapted to be. inserted between the pipe and the inner end portion of the endmost tiles, as shown, to close the air space. Provision is also made for longitudinal movement of these nipples, so that the space may be opened up upon sliding them outwardly. The advantage of the air space is in protecting the pipes from undue heat 'or destruction, by allowing for surrounding air circulation, and also for utilizing the heat when at a comparatively low temperature, to the greatest extent, by closing the air spaces. For the purpose of providing for automatic control of the air supply to cavity 17, the controlling nipples 18 may be made to open and close, due to the expansion and contraction of a controlling thermostat or diaphragm 19, Fig. 7. This device is mounted in any suitable manner, as by bolts 20 at the middle ortion of the main air circulation space 1 and preferably within an enlarged circulation opening 21-. The diaphragm 19 is connected by rods 22 or otherwise with the closing damper 18 surrounding pipe 5' like nipple 18, and the supply of air will be regulated as needed, dependent on changes in. the temperature. It will be understood that the steam drum 11 may be provided with the usual accessories, connections, etc., utilized in boiler construction for taking cartl'of the resulting steam, and that the several parts of the apparatus may be variously changed in proportions, design, or other details by the skilled mechanic or builder, but that all such changes are to be considered as within the scope of the following claims.

What I claim is:

1. The combination with a longitudinal coke oven structure, of a series of Fongitudinal water circulation pipes extending through the walls at eachv side and top of the oven chamber, inclosing tiles providing in terior air spaces for said pipes, means providing for water circulation through the pipes, header pipe connections communicating with the pipes at each end of the oven for collecting the resulting steam, and a steam drum connected with the several series of circulation pipes and header pipes, substantially as set forth.

2. The combination with a longitudinal coke oven structure, of a series of longitudinal water circulation pipes extending through the walls at each side and top of the over chamber, inclosing tiles providing interior air spaces for saidpipes, a water supply pipe embedded in the oven walls providing for water circulation through the pipes, header pipe connections communicating with said pipe and with the circulation pipes at the end of the oven for collecting the resultingsteam, and a steam drum connected with the several series of circulation pipes and header pipes, substantially as set forth.

3. The combination with the walls of an oven or furnace structure of the class described, of water circulation pipes extending therethrough and connected with a water supply system and a steam drum, said pipes being provided with series of surrounding protecting tiles having an intervening air space cavity enlarging toward the center, substantially as set forth.

4. The combination with the walls'of an oven or furnace structure. of the class described, of water circulation pipes extending therethrough and connected with a water supply system and a steam drum, said pipes being provided with series of surrounding protecting tiles having an intervening air space cavity, and means for opening or closing the air space cavity at each end portion of the structure, substantially as set forth.

5. The combination with the wall of an oven chamber, of a series of protecting tiles having air space openings increasing in cross area toward the center of the structure. said tiles being formed of two halves, a water circulation pipe extending through the air space provided by said tiles and communicating with the water supply and steam system, and slidably mounted nipples surrounding the end portions of the pipe and operable to open or close the air space, substantially as set forth.

6. The combination with the walls of an oven or furnace structure of the class descril-iecl. of Water circulation pipes extending substantially as set forth.

therethrough and connected with a Water supply system and a steam drum, said pipes being provided with protecting tiles having an intervening air space cavity, means for opening or closing the air space cavity at each end portion of the structure, and heat controlled means for actuating said means,

10 In testimony whereof I hereunto affix my signature in the presence of two witnesses. SMITH A. HUGE. Witnesses:

C. M. CLARKE, FREDK. STAUB. 

